Gathering-locomotive.



R. R. DUNLOP. GATHERING LOCOMOTIVE,

APPLICATION TILED 001e, 190a Patented Jan. 7, 1913.

2 SHEETS-SHEET I.

gwucn for Witnesses R. R. D UNLOP. GATHERING EOGOMOTIVE. APPLICATIONnLB'n'bme, 1909.

1,049,826. Patented Jan.7,1913.

2 SHEETSSHEET 2.

6 8111mm toz UNITED STATES PATENT ()FFICE.

ROBERT ROWSE DUNLOP, OF COLUMBUS, OHIO ASSIGNOR TO THE JEFFREY MANUFAC-TURING COMPANY, A CORPORATION OF OHIG.

GATHERING-LOCOMOTI'VE.

Specification of Letters Fatent.

Patented Jan. *7. 1913.

Application filed October 6, 1903. Serial No. 521 .3'2'4.

In "/N i a lm/z if'muy conoern:

lie it known that l, lloniiii r R. Dt'nnor a t-itizcen ot' the lln tetlStaten, residing at (lolumhue. in the count) of Franklin and State of()hio. ha e invented certain new ind meful Improvements in Gathering-Loeomotives. 0t Whirl the following is a sp eoitlrntion. reterenee beinghurl therein to the rireoim 'ianving t'lrznviug.

This inventirn relates to mine gathering loromotive;-; and has as ltfiobject to provide a lot-emotive with a fiexihle ezihle for C(lll((ft in;rurrent and conducting it to the locomotive, anti with an autonmtioallycontrolled Winding mechanism for the cable which is regulated by thetension in. the (able (lrztthering lt 0lllltfilVP-4 i rovitletl \vithelem trie ronthzrtor czthles are ll$tl in mine rooms antl Ride entrieswhieh z; e not equipped With tr llev wires or other llXtFil eleetriet-ontluotors. The tree en l of the table is eleetri -silly eonnertetl tothe trolley Wit in the nearest main entry, and the lotomotive propelledalong the traelts in the Sltl entries and rooms hy means of currentoontluetetl by the enhle to the ltllCOli'lOt'lYt, motors. he table isWOUIltl upon a reel Carrietl hv the l eomotire from "whit-h it is paidout it"; the lo omotive is moving away from the trolley Wit? and upon With it \vountl when the locomotive is moving tmvartl the trolley wire,Thus equipped, the lotoirniitive is ahle to gather the coal or ore ear?from the rooms in which the mine proouet i* being rot. and haul them totlirmain entry where they run he eollei-tell in trains for haulage tonointe outsitlo the mine. reat tilitiieulty has heen experientretli inproperly controlling-the unwinding: and winding movements of the reel.When them-eel is unwinding. it is tll'Fll'llOlQ to mainlair a eons-tenttension in the (able whioh shall he suttieient to prevent the enhle frombeing lairl in undulations along the twirl: and which at the same timewill not he sufficient to hreak or damage the mhle r to remove it fromits terminal fastening tit its free entl. lVhen the rahle is heine\vouml it if; necessary to operate the reel at a sqiewl proportional tothe speed oi the loromotive, and at "the same time to cause the powermechanism \Vlllt'h operates the reel to tentl to Wind the reel at alltimes taster than the movement of the locomotive will permit -10 that aunitorm tension may also he, main tuinetl (luring the movement of theloeomo tire toward the trolley wire. The failure of the windingmechanism to :o operate will result in the locomotive running ahead ofthe cable and in the wheels of the locomotive passing over and damagingor completely severing the eahle. Many devices have been suggested andmany ideas followed out in an attempt to provide a Winding mechanism forthe reel and 3, brake for controlling its unwinding movements which willbring: about the desired result. i

It is the purpose of this invention to provide a eombinetl brake anilpower \vintler Whit-l1 shall maintain an almolutel c nstant; tension inthe cable at all llmtm hether the loeomotive he rowing tor zwl or awayfrom the trolle wire or be standing still ipon he track Figure 1 ot thedrawings is a .altlj elevw tion of a loeomotive embodying theimprovements of my invention Fig. 24 is a plan. View of the mine. Figs.3 and l show the automatic voltage eontrolli lg ll'ltftlll l.- nism indetail. F'gs. 5 and 6 shoe eireuit of two eleotrieal apparatusemhotlyinzg my invention The locomotive in eonstnictetl with the usualside frames 1, l ail-(l ensl frames 2, i?- boltetl thereto. Thisframework in mounted on the axle, 4, 4 antl wheels 5, 5. The looomotiveis propelled by amour: oi the lectric motors; t'n it. e h of \vhirh into to it; correspondingr axle l. The tr ll; les: t" v erve to t-omlnrtcurrent tron; the trmlea Wire to the-moh it when the lo omotiveioperating: in those parts of the mim which are equipped with trolley 'llU the rear eml ot' the lwoimiti e :1 cont roller 8 for the loeomotiremotors, t! motornmn's sent a hralte wheel lth untl the othereoott'olling mechanism are plaeetl.

A rnhle reel 11 is mounted on :1 vertical ,uxis on top of theloeomotive, and upon it l 0 ti root t zoutully lint is intitustcd on awrit-a taxi u; lav i-il :dmti It i which is i'orinml ntr g rnl n ilwblock lisl': liit tli is (HUM will the,

it in n pwition tur {mud n lll- :irtion my tltc wi h: whioh ooznpro intho i-iihlo. mom lilo" sorru' .7

do by ilittlliFE of the thrritilird G11 und wall LS con tarot oi? thoblock 32 in umlinting pinto 48, to which in :rlurrd tho condurtor yolteH hm, sliding cwzniiu-L with the torminuls ind Si by means of tl oshoeor brush it" and at ith tho oi tlio hrudi ciililr n noruml i =13)" willllUljlJi} i thcso terminals. out will ho b'iilipfllititl on a blo k Iwhich with ut tlttflil dl (tomato iion with other parts. i

as and :34 art: two wlr-noids mounted in flllllPilit-Hl, \ith nu ii.other prolorubly with their mob oxtonding trnnsrciwly oi the loooum iYr, 7 k z 5!; i: a vote r; idly mountod on a rod (30 trnut turn lit".Whon the tPiLSlOil in llof for longitudinal movement liotwccn tho twosolvnoids and. into one or the ()tl'u't of them, The allllll iltl .3 3in i-loctriciilly connected with tho contact, and tho aolonoid 54 i;-:ele 3- lrimilly (i liiil' iftftl with tho ooniu 1 5i,

\l'hrn tho i liblull in the. too small tho spring will mow the yoke 49to it. position where it will oonnoctterini unit; 5*) and at androniplctc the circuit of tho gt ltilultl 5 1;, (ruminating currentv toit from the sliding oonturt devices of the cable by llltfilllti ofconductor -lVl1e11, on the other hand, the tension in the cablc innabove norliinl the yoke will bepullrd llt'l. M PUSlllHl to Slilil riyoncrgizo the solenoid fit Enough thit- .ontwiot 5i. shown in Z5. whentho solenoid 33 1 Tho cable 15 til: it leaves the reel hvtuorn tho\orticully mounted i nro bolted t I d? lflll'ici of the lo oinotix'rlino joining the l'flllLlh iii and iii 1 tho u-mg to an oxtrnt varyingin :itttitttnlitt' 1th the ninount ot thotrnsion .un of tlic fixed uluti ll and which (2111 lm .r llltlnfi or tho rank fit This 3 iorininnh50* and ill" by mean tliimlliii the shoot; 49 and 3 rngngvnient with:iny of i mm tin. u; tion of the spring into l iergizod,

the euro. One of those contact .it .dhhihly ongngn tho terminal 59iviurtor \ii 0 i: nnd the other conowl; 2'31) slidnhl vintages thecontact innit n i which arc tho terminals of the ill loading to thcmotor Bl. Resistance is intripwod hrtwoen those buttons, so than Wllillthe ((Hilzit'l blot-l; Ill is in engage- :mni with the right hund button10 all of ihi ro-i -tunrt i=1 interposed in series in the circuit, oithr motor. i\- the contact block i inorra ;-1ic(: sly into rug ftllltlliwith the conta t buttons itt". 10, etc, tho resistance is lr ronswl bystops, until tho contact button it) in rouchcd, whon tho mltugo appliedto tho inotdr lJU'tHitth nniximuin. To steady the a tion of tho wlrnoid55, it; that control of the within tension may not be jerky, the rodtit) hm: Mfl'lll'til at ita outer end the piston til which oporntos intho oil cylinder 62. "llnii pnors from tho chamber in front of horlniiniior to the roar of the l tho pmlon in:

linton hv moans of ti and its iii-who. it fl w 27- i moons of :1 vulvotilt in. tho i in; our the automatic Hlwlt lt ttlllltillilig nwrlnini-znn which is in ctt'ort ii tonsion governor, prnvcntod from owrrunning.in other won 5, the oil cylindor or retarding devi e prevents thecontrolling; mechanism from responding so qui -lair and violently tothe, change of ten: won. Ii to more than counteract the change. 'l lmmotor 21 may either be a series 1110- 1 tor, a shown in Fig. 5, or ashunt motor, as .sllfmll in Fig: 6. From tho motor the ourrontis lollbark to tho cnorutor in any suitable path, the drawings indicating thatthe rcturn terminal of the motor is grounded. ltlvchzinisin is providedwhereby, when the will: is mnnoctod to the trolley Wire, the trollovpole and its winncctions are cut out i of cirouit, and the ruhlo isplaced in series l with the locomotive motors. The same 3 moohunisnialso autonititicully cuts the cable and tho rool motor out of circuit assoon as 1 the cubic hook is Sopn utod from the trolley wire. Thisnicclianinni oon'iprises the elcct rio-magnet M, which is energized bymeans of the ooniluctor wire *2) :n soon as the cable hookelei'ztriczilly connur-tod to the trolley wire. When thus ontrgizod, theelectroinzignoti draws the owitch 46 toward itself ing the wirc &5 withthe controller 8 and the l mi motoru ti. Nixon tho locomotive is0pcrntrd from tho trolley wire the electronnignrt doiintzrgizod and thespring 47 n n05 tho EWllCll 4 into po-:ition to'conneot n wire it? whichleads to tho trolley Wheel nting lunhing .37 scaled in the hole 58drilled ngnimt the action of the spring 47 connoctv with the controller8 and the car motors Since the reel motor is always in series with thecable, it is automatically energized whenever the cable hook isconnected to the trolley wire and current. This current cut off wheneverthe cable is disconnected from the trolley wire by the action of thespring 47. \Vhen the locomotive is to be operated by means of the cablethe cable hook is fastened to the trolley wire and the locomotiveproceeds away from the trolley wire with either the motormans end inadvance or with the other end in advance, as may be most convenient.When the end opposite the motormans position is in advance, the cable isconducted back from the guide mechanism 28 and kept from chafing againstthe locomotive parts by any suitable antifriction devices. Irrespectiveof whether one end or the other is in advance, as soon as the cable isconnected to the trolley wire, the motor will be energized and the armature will be compelled to turn against the magnetic torque of the field,the cable is unwound from the reel under the action of the movinglocomotive. Tension will be created in the cable because the motor armature is thus resisted in its rotation by the energized field. If thistension exceeds a predetermined amount the spring 35 will be compressedmore than its normal amount and resistance will be put in series withthe reel motor. Thus, the voltage applied to the motor will bediminished, the winding torque will be correspondingly diminished andthe tensi n in the cable will be lowered to the de ired normal. If thelocomotive should he suddenly retarded in its motion along the tra k andthe cable should be- 'vlIlQ too slack, the spring it!) willautomatically cut out resistance from the circuitof the reel motor, thevoltage across the motor terminals will be increased and the windingtorque will be correspondingly increased, with the result that thetension in the cable is again brought back to normal. hen the locomotivemoving toward the fixed end of the cable the motor armature will berotated by electrical energy, and the voltage applied to the motorterminals will be rcgulat/ed and increased or diminislud as theconditions of operation vary, so as to maintain the tension in the cableconstant in quantity. The motor is so designed that it will illllsoperate either as an electro-magnetic braltc or to furnish power to windthe reel. accord ing as the locomotive is moving in the direction tounwind the caldc or in the direction to wind the Ctldt rcspcctivcly. Theelectric energy required to rotate the reel to wind the cable i:-'greater than that required to cause themotor to act as a brake when thereel is unwinding othcr conditions being cqual 'it' constant tensionunder both sets of conditions is the dcsideratum. liy

(3. l using the automatic controlling mechanism which has beendescribed, the same motor can be used for both purposes andthe tensionbe kept at. a normal value under all circumstances. This automaticaction is the same whichever end of the locomotive be in advance, as itrecedes from the fixed end of the conductor. The reel motor isautomatically put in circuit, and from the time that the cable is placedin operation until the time when the cable is again discon-' nected, noattention of the motorman is required however suddenly the conditions ofoperation may vary.

The automatic controlling mechanism is operated by the tension of thecable and not by the speed of the locomotive, the speed of the reelmotor, or any variation in the speed of the locomotive or of the reelmotor. It operates effectively whether the slack in the cable on the,one hand, or the excessive tension in the cable on the other hand, becaused by variation in the line voltage, by

mechanical obstruction of therotative movement of the reel, by frictionbetween the cable and the locomotive parts or by variations in the speedof the locomotive. It will also operate whether a series motor or ashunt motor be used to drive the reel. F or some reasons a shunt motoris preferable to I a series motor for the purpose of driving the reel,the shunt motor being capable of being so designed that its speed willnot vary excessively under varying load conditions. When a shunt motoris used the slackening of the cable is not automatically taken care ofby an increase in the speed of the motor, such is to some extent thecase with a series motor which thus responds to a lightening of theload; and when using a shunt motor, the automatic device, which is thesubject matter of this invention, becomes then a necessity forincreasing the speed of the motor.

'hat I claim is- .l. The combination in a locomotive, of an electricmotor for propelling it, a cable reel mounted on the locomotive, aconductor cable wound on the reel at one end and adapted to be securedto a fixed conductor at the other end, and electrically connected withthe said motor. a power device. transmilting mechanism between the powerdcvicc and the reel. and mechanism for varying the power supplied thepower device. aid mechanism being controlled by thctcnsion in the cable.

2. The combination in a locomotive, of an electric motor for propellingit, a cable recl nn'untcd on the locomotive. a conductor cable wound onthe reel at one end and adapted to be secured to a fixed conductor atthe other end. and electrically connected with the said motor, a powerdevice, transmitting mechanism between the power device and the reel,and mechanism for varying the speed of the power device, said mechanismbeing controlled by the tension in the cable.

3. The ct'unbination in a locomotive, of an electric motor forpropelling it, a cable reel mounted on the locomotive, a conductor cableWound on the reel at one end and ad apted to be secured to a fixedconductor at the other end, and electrically connected with said motor,means for applying a. winding torque in opposition to the unwindingrotation of the reel, and an automatic controlling n'iechanism for thesaid torque applying means operable by the cable tension.

4. The combination in a locomotive, of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor cable Wound onthe reel at one end and adapted to be secured to a fixed conductor atthe other end, and electrically connected With-the said motor, means forrotating the. reel, said means being independent of the locomotive motorand propelling mechanism and being energized independently of themovement of the locomotive, and automatic controlling mechanism for thesaid reel rotating means operable by the cable tension.

5. The combination in a locomotive, of an electric motorfor propellingit, a cable reel mounted on the locomotive, a conductor cable wound onthe reel at one end and adapted to be secured to a fixed conductor atthe other end, and electrically connected with the said motor, a secondelectric motor for operating the reel, and automatically actingcontrolling mechanism for the second motor operable by the cabletension.

6. The combination in a locomotive, of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor cable wound onthe reel at one end and adapted to be secured to a fixed conductor atthe other end, and electrically connected with the said motor, a secondelectric motor for operating the reel, and automatically actingmechanism operable by the cable tension for varying the voltage appliedto the second motor.

r 7. The combination in a locomotive, of an electric motor forpropelling it, a cable reel mounted on the locomotive, a conductor cable wound on the reel at one end and adapted to be secured to a fixedconductor at the other end, and electrically connected with the saidmotor, a single device ada )ted to serve as a combined power brake anpower Winder for the reel, operatiin as a brake when the reel isunwinding and as a winder when the reel is Winding, a single train ofconnections between the said device and the said reel, and a governorfor the said device controlled by the cable tension.

8. The combination in a locomotive, of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor ca ble Wound onthe reel at one end and adapted to be secured to a fixed conductor atthe other end, and electrically connected with the said motor, means forapplying an clec tro-magnetic torque to resist the unwinding rotation ofthe reel, and an automatic controllen for the said means operable by thecable tension.

9. The combination in a locomotive. of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor cable wound onthe reel at one end and adapted to be secured to a fixed conductor atthe other end, and electrically connected with the said motor, a secondelectric motor geared to the cable reel and adapted to wind the cablewhen the locomotive is moving toward the fixed conductor and to electro-magnetically resist the unwinding of the cable reel when thelocomotive is moving away from the fixed conductor, and an automaticcontroller for the second motor operated by the cable tension.

10. The combination in a locomotive, of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor cable wound onthe reel at one end and adapted tobe secured to a fixed conductor at theother end, and electrically connected with the said motor, a secondelectric motor permanently geared to the cable reel, and automaticmechanism operated by the cable tension to vary the voltage applied tothe reel.

11. The combination in a locomotive, of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor cable Wound onthe reel at one end and adapted to be secured to a fixed conductor atthe other end, and electrically connected with the said motor, a secondelectric motor for the cable reel, and mechanism operable by the cablewhen the tension therein exceeds or is less than normal to decrease orincrease respectively the voltage applied to the reel motor.

12. The combination in a locomotive, of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor cable wound onthe reel at one endand adapted to be secured to a fixed conductor at theother end, and electrically connected with the said motor, a, secondelectric motor for the cable reel and means for regulating the voltageapplied to the reel motor operable by the cable tension to maintain saidtension constant under varying conditions.

13. The combination in a locomotive, of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor cable wound onthe reel at one end andada ted to be secured to a fixed conductor attlie other end, and electrically connected with the said motor,acombined power brake and power winder for the reel, operating as abrake when the reel is unwinding and as a winder when the reel iswinding, and a' governor for the said brake and winder controlled by thecable tension,- and adapted to regulate the power applied thereto tomaintain the cable tension constant under varying conditions andirrespective of the direction of. movement of the locomotive. 14. Thecombination in a locomotive, of an electric motor for propelling it, acable reel mounted on the locomotive, a conductor cable wound on thereel at one end and adapted to be secured to a fixed conductor at theother end, and electrically connected with the said motor, a secondelectric motor geared to the cable reel and adapted to wind the cablewhen the locomotive is moving toward the fixed conductor and toelectro-magnetically resist the unwinding of the cable reel when thelocomotive is moving away from the fixed conductor, and an automaticcontroller for the second motor operated by the cable tension andadapted to maintain the cable tension constant under varying conditionsand irrespectiy e of the direction of movement of the locomotive.

15. The combination in a locomotive, of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor cable wound onthe reel at one end and adapted to be secured toa fixed conductor at theother end, and electrically connected with the said n itor, means foroperating the reel to wind the cable, means for regu lating theunwinding movement of the reel, and means for controlling the windingand the regulating means operable by the cable to maintain the cabletension constant irre spective of the direction of movement of thelocomotive. 4 16. The combination in a locomotive, 0 an electric motorfor propelling it, a cable reel mounted on the locomotive, a conductorcable wound on the reel at one end and adapted to be secured to a fixedconductor at the other end, and electrically connected with the saidmotor, a second electric motor geared to the cable reel and adapted towind,

the cable when the locomotive is moving toward the fixed conductor andto electromagnetically resist the unwinding of the cable reel when thelocomotive is moving away from the fixed conductor, and automatic meansfor applying more power to said motor when the locomotive is movingtoward the fixed conductor than when it is moving away therefrom.

17. The combination in a locomotive, of an electric motor for propellingit, a cable reel mounted on the locomotive, a conductor cable wound onthe reel at one end and adapted to be secured to a fixed conductor atthe other end,-and electrically connected with the said motor, a secondelectric motor geared to the cable reel and adapted to wind the cablewhenthe locomotive is moving toward the fixed conductor and toelectromagnetically resist the unwinding of the cable reel when thelocomotive is moving away from the fixed conductor, and automatic meansoperable by the cable, tension for increasing the voltage applied to thereel when it is moving toward the fixed conductor to a value greaterthan that when the locomotive is moving away from the fixed conductor.

18. The combination in a locomotive, 'of an electric motor forpropelling it, a cable reel mounted on the locomotive, a conductor cableWound on the reel at one end and adapted to be secured to a fixedconductor at the other end, and electrically connected wit-h the saidmotor, a second electric motor for the reel, a variable resistance inseries with the motor, and a cont-roller o erable by the cable wheneverthe tension tiierein exto give the resistance a new value adapted tobring the cable tension. back to normal.

19. The combination in a locomotive,- of,

reel mounted on the locomotive, a conductor adapted to be secured to afixed conductor at the other end, and electrically connected with thesaid motor, a second electric motor for the reel, a variable resistancein series spring acting onthe pulley and resisting the tension in thecable, and means operatively connecting the pulley and switch.

In testimony whereof I aflix my signature,

in presence of two witnesses.

ROBERT RQWSE DUNLOP. Witnesses: V

W. R. Youmaus,

ARTHUR G. Sxnnns.

ceeds or is less than a predetermined amount an electric motor forpropelling it, a cable cable wound on the reel at one end and therewith,a switch to vary the resistance, a movably mounted pulley for the cable,a

